Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Pontiac Sunfire AutomaticFACTORY OEM SERVICE PROCEDURE
Lighting DTCS
LIGHTING DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B2532 | Fog Lamp Relay Control Circuit Is Open Or Shorted To Ground |
| DTC B2533 | Fog Lamp Relay Control Circuit Is Shorted To Voltage |
| DTC B2558 | Interior Lamp Control Circuit Is Shorted To Voltage |
| DTC B2600 | DRL Relay Circuit, Or Headlamp Battery Positive Voltage Circuit Open |
| DTC B2601 | DRL Relay Control Circuit Shorted To Ground |
| DTC B2602 | DRL Relay Control Circuit Shorted To Ground |
| DTC B2603 | DRL Relay Control Circuit Shorted To Voltage |
| DTC B2624 | Dimmer Switch Signal Circuit |
| DTC B2625 | Instrument Panel Dimming Lamps Output Circuit |
| DTC B2662 | Park Lamp Input |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.